11813242069 has 4 divisors (see below), whose sum is σ = 11813486944. Its totient is φ = 11812997196.

The previous prime is 11813242033. The next prime is 11813242079. The reversal of 11813242069 is 96024231811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11813242069 - 2²³ = 11804853461 is a prime.

It is a super-2 number, since 2×11813242069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11813242079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23337 + ... + 155470.

It is an arithmetic number, because the mean of its divisors is an integer number (2953371736).

Almost surely, 2^11813242069 is an apocalyptic number.

It is an amenable number.

11813242069 is a deficient number, since it is larger than the sum of its proper divisors (244875).

11813242069 is an equidigital number, since it uses as much as digits as its factorization.

11813242069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244874.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 11813242069 in words is "eleven billion, eight hundred thirteen million, two hundred forty-two thousand, sixty-nine".